# CVE-2026-0911: Hustle <= 7.8.9.2 - Authenticated (Subscriber+) Arbitrary File Upoload via Module Import

> Authenticated users with module permissions can upload arbitrary files, potentially leading to remote code execution on WordPress sites using the Hustle plugin.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Jan 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-46wh-5x8w-r437

## What is CVE-2026-0911?

CVE-2026-0911 is a high-severity vulnerability in wpmudev Hustle – Email Marketing, Lead Generation, Optins, Popups, published on 24 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Hustle – Email Marketing, Lead Generation, Optins, Popups plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the action_import_module() function in all versions up to, and including, 7.8.9.2. This makes it possible for authenticated attackers, with a lower-privileged role (e.g., Subscriber-level access and above), to upload arbitrary files on the affected site's server which may make remote code execution possible. Successful exploitation requires an admin to grant Hustle module permissions (or module edit access) to the low-privileged user so they can access the Hustle admin page and obtain the required nonce.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2026-0911?


## How do I fix CVE-2026-0911?

No fix has been published for CVE-2026-0911 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-0911 being exploited?

There is no known exploitation of CVE-2026-0911 in the wild and no public exploit code.

Public exploit code:

- CVE-2026-0911 için kimlik doğrulamalı test aracı: Hustle eklentisinde modül içe aktarma üzerinden zayıf dosya yükleme ve “yetim dosya” davranışını kontrol eder; yalnızca izinli ortamlarda ve geçerli WordPress oturumuyla kullanılmalıdır. (github_poc): https://github.com/murrez/CVE-2026-0911

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-0911 and fix it if it is affected.

What it is: CVE-2026-0911 is a high-severity vulnerability in wpmudev Hustle – Email Marketing, Lead Generation, Optins, Popups, published on 24 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-0911 in the wild and no public exploit code.

Affected product: wpmudev Hustle – Email Marketing, Lead Generation, Optins, Popups. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-0911/ (Markdown: https://insights.sbomify.com/CVE-2026-0911/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-0911
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-0911
- OSV: https://osv.dev/vulnerability/CVE-2026-0911

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-0911/
Summaries are generated and may contain mistakes; the official description above is the record.